Solve.The sum of the squares of two numbers is 130 and the difference of their squares is 112. Find the two numbers
A. 3 and 11; 3 and -11
B. 3 and 11; -3 and -11
C. 3 and 11
D. 3 and 11; 3 and -11; -3 and 11; -3 and -11
Answer: D
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? 3
A. [18, ?)
B. (18, ?)
C. (-?, 18]
D. (-?, 18)
Evaluate f(x) at the given value of x.f(x) = 
x + 
; x = 3
A. 
B. 
C. 
D. 8
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A. 3.2 in. B. 2.5 in. C. 2.8 in. D. 3.6 in.
In the simplex tableau 
, what is the next pivot element?
A. 10 in the second row, second column B. 5 in the first row, first column C. 12 in the first row, second column D. 15 in the second row, first column E. none of these